Valve grinder



July 5 1932. BowMAN VALVE GRINDER Filed Deo. '7, 1931 2 Sheets-Sheet l MZ ,Zltgz ATTORNEY VALVE GRINDER Filed Dec. '7. 1931 v 2 Sheets-Sheet 2 CWMZINVENTOR ATTOR N EY Patented July 5, 1932 PATENT orifice` v g CLIFTON BOWMAN, F HAMPTON, VIRGIN'IA vALvn GRINDER Application led December l7, 1931. Serial No. 579,607.r

This invention relates to valve grinders,

and its general object is to provide a valve grinder that is capabley of grinding several valves of an internal combustion engine simultaneously, or a single valve can be groun if desired. y

A further object of the invention is to provide a vvalve grinder of the characterset forth, that is simple in construction, inexpensive to manufacture, and extremely eiiicient in operation and service. i This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifi-l cally pointed out in-theV appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding-parts throughout the several views, and in which:

Figure 1 is a View partly in section illustrating the 'valve grinder which forms the subject matter of the present invention in use and arranged for grinding two valve simultaneously.

Figure 2 is a similar view but-arranged for grinding a single valve.

Figure 3 is a sectional view taken approximately on line 33of Figure 1, looking in the direction of the arrows.

Figure 4L is a sectional view taken approximatelyl on line 4-4 of Figure 1, looking in Y. the direction of the arrows.

Figure 5 is a sectional'view taken approximately on line 5 5 of Figure 1, looking 1n the direction of the arrows.

Referring to the drawings in detail, the reference numeral 1 indicates a housing which'forms the body of my tool andthis housing is substantially oval shape in longitudinal cross section as best shown in Figure 4. The top of the housing is indicated by the reference numeral 2 and detachably associated therewith, with screw bolts for securing the top in place. Formed with and rising from the top isa substantially bail shape handle 3, while formed with and depending from the bottomfof the housing is a sleeve 4 which has its bore extending into the housing as clearly shown in Figure 1, and the portion of the bore that is arranged in the bottom is enlarged andV threaded to threadedly receive a collar 5 that forms a part of a ball race for the balls 6 of a bearing, the latter being provided fora socket member 7 which has the other part of the ball race formed therewith and rising' therefrom is a stud 8 arranged in the housing and has secured thereto a gear 9 for a purpose which will be presentlyV apparent.` Formed with the lower portion of the .socket member 7 is a gear 10 that is adapted to mesh with gears 1l, there being one gear 11 fixed to each of the spindles-12 which are identical in lconstruction and have their upper ends mounted for rotation in bearing openingsarranged at the bottom and top of the housing'as best shown in Figure 1. Y

Each of the spindles is provided with an annular groove arranged adjacent its upper end for the purpose of accommodating a spring ring lock washer 13 that holds the spindles within the housing, and by this construction it will beapparent that the spindles can be removed from the housingupon removing the spring ring lock washers from their grooves. iV

The lower ends of the spindles are'reduced and slotted longitudinally to provide spaced larms 14a between which are pivoted bit `members 15 that have formed ytherewith spaced parallel lugs 16 adapted to' be received in the openings in the heads of the valve as shown in Figure 1, and the bit members 15 also have extending from one of their ends a tongue 17 for usc with valve heads that are provided with slots, with the result it will be noted that mytool is capable of operation upon valves of different types. Formed with and depending from the socket member 7 and extending below the gear cured to one end thereof-ahandle 21, and it will be obvious that upon reciprocating the rack bar which has its teeth arranged in'mesh with the gear 9, that theI gears Il are rotated through the instrumentality of the gear l() and the socket member T, as the latter has the gear 9. secured to the stud 8: thereof.

From the above description and disclosure of the drawings, it will be obvious that I have provided a tool for grinding, reseating and polishing the valves or an internal comhustion engine in an Veasy and expeditious mannerwith very little eiiort, and one valve or several may be operatedV upon simultaneously.

It is thought from the foregoing description that the' advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several' parts, provided that Such Changes fall within the scope of' the. appended claims.

What l claim is: 1

l. A valve tool of thecharacterdescribed; comprising a housing, a top detachably secured to said housing, a handle secured to and; rising from said top, spindles detachably mountedfor rotation in said' housing, bit members pivota-lly secured to the lower ends. of said spindles, means for rotating the4 spindles simultaneously and mea-ns in'-l Cluded in the rotating means. for receiving either one of said spindles upon its removal from said housing, whereby either one of the spindles, may be. rotated singly. Y

2. A valve grinding. tool comprising a housing, a handle. rising from thextop oii said housing, a sleeve. dependingzfrom the, bottom thereof and `having its bore extendingrv into said housing, a socket member molnted for rotation in said sleeve, a stud formed with said. socket member and arranged in said housing, a gear secured to said. stud, spindleshaving-one of their ends rotatably mounted in said housing andy being detachable therefrom, bit members. pivotally secured to the lower endsv of said spindles, meansr for rotating the spindles from the socket member, and' means for rotating the gearA torotate the socket member. Y

3. A valve grinding tool comprising a housing, a detachable top for said housing, a. hand-le' formed withanfdi rising from. said L top, a sleeve` formed with; and depending from the bottom of said housing, a socket member mounted for rotation in said sleeve, a stud formed with the socket member and arranged in said housing, spindles mounted for rotation in the top and bottom and detachaloly associated therewith whereby either one of said spindles may be inserted in the socketmember, means tor securing either spindlewithin the socket member, blt members tor said spindles, a gear secured to the stud, means Jfor rotating the gear to rotate the socket member, and means for rotating the spindles from the socket member when the spindles are secured to the top and bottom.

at., A valve, grinding tool comprising a housing, a handle secured to said housing and .rising therefrom, a sleeve depending from the bottom .of Said housing, a socket member mounted for rotation in said sleeve, a stud formed with the socket memlnel` and arranged in .said housing, a gear secured t0 said stud, a rack har mounted for reciprooation through said housing fory rotatingy said socket. member through the medium of' said gear, spindles having their upper ends mounted for rotation in saidhousing, bit members pivotally secured tothe lower ends of said spindles, moans for simultaneously ro,-J tatng said spindles-from the socket. meme ber and either one of said spindles being adapted tobe detaehably secured inthe socket; member for indiv-idualrotation,

5. A` valve grinding tool comprisingI a: housing, a handle secured to said housing, means lmounted for rotation and carried by said housing, means for rotating the, rotatebly mounted means, and being mounted for reciprocation through said housing, spins dles detachablysecured in said housing and. depending therefrom, means included in the. rotating means for detachably receiving either: oat said spindles, whereby. either spindle may be rotated singly, means for simule, taneously. rotating' the spindles from the rotatingvmeans when thev latter are. secured to said housing, and bit members pivotailily ses cured to said spindles and including means for association with various types of valve. heads. i i

Y 64A valve grindingtool offthecharacter described comprising a hou-sing, a handle. ses cured to said housing, a pair# off spinddies havingrtheir upper ends detachabliyf mounted in said housing tor rotation, means: Jforro-` tatingrsaid: spindles. and carried bgyrsaidhonsing, means includingthe rotating means to detachably receive eitherone of said spindles whenthe latter are moved from. saidhousing, b it membersy pivotaltysecured; to, said spin.- dles, lugs included inV said, bit' members, and atongue vformed, withK said bit members.V

7T. A valvel grinding tool;- comprising a housing, a handle secured to. said; housing, spindlesadetachably secured in. said housing and mounted for rotation therein, means for rotating said spindles simultaneously, means included in said rotating means for detachably receiving either one of said spindles, bit members secured to said spindles, guide arms formed with said housing and extending from diametrically opposite sides thereof, and a rack bar mounted for reciprocation through said housing and guide arms to rotate the rotating means.

In testimony whereof I aix my signature* CLIFTONk BOWMAN. 

